Only three stars.    I should have noticed that the steps weren't covered entirely with a non slipcover.    The height is great,.   Easy to clean.    However, my Pugs won't use it coming down as they slip on the plastic edges and have tumbled.   They'll use it to climb up only.
I just cut carpet pieces to cover each entire stair.    Will then secure in place and my Pugs will feel safe to use it both coming and going.